Experiment Name :
Dyeing of 100% cotton fabric with direct dye.
Theory :
In this experiment dyeing of 100% cotton fabric is done with direct dye.Dyeing is done to add color on textile materials.By doing this process textile materials become colorful for our desire.So after finishing this process textile materials are ready for making garments.
Nature of sample :
The sample that we have taken a cotton fabric.It is carded yarn's fabric and knitted fabric.
Instruments required :
1. Gas burner
2.Pipet
3.Thermometer
4.Glass rod
5. Scissor etc.
Recipe :
Direct dye = 1% owf (stock solution- 1%)
Wetting agent = 1 g/L ( stock solution- 1%)
Salt = 2 g/L (stock solution- 1%)
Temperature = 100' C
Time = 20 min
Sample wt = 5 gm
pH=7-8.5
M:L = 1:40
Calculation :
Sample wt = 5 gm
M:L = 1:40
Amount of total liquor = 5 X 40 ml = 200 ml
Direct dye = (5 X 1%) / 1% = 5 ml
Wetting agent = (200 X 1) / (1000 X 1%) = (200 X 1 X 100) / (1000 X 1) = 20 ml
Salt = (200 X 2) / (1000 X 1%) = (200 X 2 X 100) / (1000 X 1) = 40 ml
Total water = 200 ml - (5 + 20 + 40) ml = 135 ml
Procedure :
First we have to take total liquor in a glass. In the glass we have to take the sample. After taking all these we have to heat the glass in 20 min. In heating process we have to shake total liquor by glass rod in time to time.After finishing this process we have found a color fabric.
Process curve :
Sample attachment :
Conclusion :Dyeing is very important in textile industries for many purposes. In this experiment we came to know how to do this dyeing process. We think, this experiment will be very helpful in our future working life.
In this experiment dyeing of 100% cotton fabric is done with direct dye.Dyeing is done to add color on textile materials.By doing this process textile materials become colorful for our desire.So after finishing this process textile materials are ready for making garments.
Nature of sample :
The sample that we have taken a cotton fabric.It is carded yarn's fabric and knitted fabric.
Instruments required :
1. Gas burner
2.Pipet
3.Thermometer
4.Glass rod
5. Scissor etc.
Recipe :
Direct dye = 1% owf (stock solution- 1%)
Wetting agent = 1 g/L ( stock solution- 1%)
Salt = 2 g/L (stock solution- 1%)
Temperature = 100' C
Time = 20 min
Sample wt = 5 gm
pH=7-8.5
M:L = 1:40
Calculation :
Sample wt = 5 gm
M:L = 1:40
Amount of total liquor = 5 X 40 ml = 200 ml
Direct dye = (5 X 1%) / 1% = 5 ml
Wetting agent = (200 X 1) / (1000 X 1%) = (200 X 1 X 100) / (1000 X 1) = 20 ml
Salt = (200 X 2) / (1000 X 1%) = (200 X 2 X 100) / (1000 X 1) = 40 ml
Total water = 200 ml - (5 + 20 + 40) ml = 135 ml
Procedure :
First we have to take total liquor in a glass. In the glass we have to take the sample. After taking all these we have to heat the glass in 20 min. In heating process we have to shake total liquor by glass rod in time to time.After finishing this process we have found a color fabric.
Process curve :
Sample attachment :
Conclusion :Dyeing is very important in textile industries for many purposes. In this experiment we came to know how to do this dyeing process. We think, this experiment will be very helpful in our future working life.
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